org.apache.poi.openxml4j.exceptions.InvalidFormatException：：org.apache.poi.POIXMLException

Question

我使用以下jar文件：

dom4j-1.6.1.jar
poi-3.9-20121203.jar
poi-ooxml-3.9-20121203.jar
poi-ooxml-schemas-3.9-20121203.jar
xmlbeans-2.3.0.jar

代码：

package ExcelTest;

import java.io.File;
import java.io.FileInputStream;
import java.util.Iterator;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class Test
{
    public static void main(String[] args)
    {
        try
        {
            FileInputStream file = new FileInputStream(new File("G:\\Selenium Jar Files\\TestData\\Data.xls"));

            //Create Workbook instance holding reference to .xlsx file
            XSSFWorkbook workbook = new XSSFWorkbook(file);

            //Get first/desired sheet from the workbook
            XSSFSheet sheet = workbook.getSheetAt(0);

            //Iterate through each rows one by one
            Iterator<Row> rowIterator = sheet.iterator();
            while (rowIterator.hasNext())
            {
                Row row = rowIterator.next();
                //For each row, iterate through all the columns
                Iterator<Cell> cellIterator = row.cellIterator();

                while (cellIterator.hasNext())
                {
                    Cell cell = cellIterator.next();
                    //Check the cell type and format accordingly
                    switch (cell.getCellType())
                    {
                        case Cell.CELL_TYPE_NUMERIC:
                            System.out.print(cell.getNumericCellValue() + "t");
                            break;
                        case Cell.CELL_TYPE_STRING:
                            System.out.print(cell.getStringCellValue() + "t");
                            break;
                    }
                }
                System.out.println("");
            }
            file.close();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
}

当我编译时，我得到以下错误：

org.apache.poi.POIXMLException: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]
    at org.apache.poi.util.PackageHelper.open(PackageHelper.java:41)
    at org.apache.poi.xssf.usermodel.XSSFWorkbook.<init>(XSSFWorkbook.java:218)
    at ExcelTest.Test.main(Test.java:21)
Caused by: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]
    at org.apache.poi.openxml4j.opc.ZipPackage.getPartsImpl(ZipPackage.java:199)
    at org.apache.poi.openxml4j.opc.OPCPackage.getParts(OPCPackage.java:665)
    at org.apache.poi.openxml4j.opc.OPCPackage.open(OPCPackage.java:274)
    at org.apache.poi.util.PackageHelper.open(PackageHelper.java:39)
    ... 2 more

我已经通过链接，但无法解决问题。Getting Exception(org.apache.poi.openxml4j.exception - no content type [M1.13]) when reading xlsx file using Apache POI?

有谁能帮帮我吗？

Answer 1

您正在尝试读取具有显式实现poi类的xlsx的xls。

G:\Selenium Jar Files\TestData\Data.xls

或者使用HSSFWorkbook和HSSFSheet类，或者通过使用共享接口使您的实现更加通用，例如；

更改：

XSSFWorkbook workbook = new XSSFWorkbook(file);

至：

 org.apache.poi.ss.usermodel.Workbook workbook = WorkbookFactory.create(file);

和改变：

XSSFSheet sheet = workbook.getSheetAt(0);

至：

org.apache.poi.ss.usermodel.Sheet sheet = workbook.getSheetAt(0);

Answer 2

您正在尝试访问XLS文件。但是，您使用的是XSSFWorkbook和XSSFSheet类对象。这些类主要用于XLSX文件。

对于XLS文件：HSSFWorkbook & HSSFSheet

对于XLSX文件：XSSFSheet & XSSFSheet

所以用HSSFWorkbook代替XSSFWorkbook，用HSSFSheet代替XSSFSheet。

因此，在进行更改后，您的代码应该如下所示：

HSSFWorkbook workbook = new HSSFWorkbook(file);

HSSFSheet sheet = workbook.getSheetAt(0);

Answer 3

试试这个：

package my_default;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Iterator;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class Test {

    public static void main(String[] args) {
        try {
        // Create Workbook instance holding reference to .xlsx file
        XSSFWorkbook workbook = new XSSFWorkbook();

        // Get first/desired sheet from the workbook
        XSSFSheet sheet = createSheet(workbook, "Sheet 1", false);

        // XSSFSheet sheet = workbook.getSheetAt(1);//Don't use this line
        // because you get Sheet index (1) is out of range (no sheets)

        //Write some information in the cells or do what you want
        XSSFRow row1 = sheet.createRow(0);
        XSSFCell r1c2 = row1.createCell(0);
        r1c2.setCellValue("NAME");
        XSSFCell r1c3 = row1.createCell(1);
        r1c3.setCellValue("AGE");


        //Save excel to HDD Drive
        File pathToFile = new File("D:\\test.xlsx");
        if (!pathToFile.exists()) {
            pathToFile.createNewFile();
        }
        FileOutputStream fos = new FileOutputStream(pathToFile);
        workbook.write(fos);
        fos.close();
        System.out.println("Done");
    } catch (Exception e) {
        e.printStackTrace();
    }
}

private static XSSFSheet createSheet(XSSFWorkbook wb, String prefix, boolean isHidden) {
    XSSFSheet sheet = null;
    int count = 0;

    for (int i = 0; i < wb.getNumberOfSheets(); i++) {
        String sName = wb.getSheetName(i);
        if (sName.startsWith(prefix))
            count++;
    }

    if (count > 0) {
        sheet = wb.createSheet(prefix + count);
    } else
        sheet = wb.createSheet(prefix);

    if (isHidden)
        wb.setSheetHidden(wb.getNumberOfSheets() - 1, XSSFWorkbook.SHEET_STATE_VERY_HIDDEN);

        return sheet;
    }

}